Does Intel use completely different design for their Atom line?

[Logan]

Hi guys.
https://en.wikipedia.org/wiki/List_of_Intel_CPU_microarchitectures
https://en.wikipedia.org/wiki/Tick–tock_model
So does Intel use the same architecture from Celeron to Xeon E7, while redesign a totally different arch just for Atom?
Welcome to talk.

[ejeffrey]

Yeah, Atom is a different architecture.  Well, technically Atom is a brand name for low power CPUs that has been applied to several micro-architectures.  But the original Atom was an in-order, non super-scalar processor completely different from P6, Netburst, and Core architectures.  More recent iterations have added more complexity such as out-of-order execution as well as taking the integrated graphics processors from the higher end desktop processor, but AFAIK they have never sold an Atom branded processor with a core derived from a desktop processor. 

[NiHaoMike]

Atom has kind of lost its relevance with the availability of cheap but well performing ARM platforms. The remaining use cases are if you need to run x86 software that needs little compute power, for example OPNsense or retro gaming.